deluded? moi?

The chairman of the management committee of a local mental hospital was taking a nice stroll in the grounds of the hospital. He fell into conversation with a patient who was leaning on a gate. He asked the patient's name and then said, "Do you know who I am?" The patient said he did not. "I am the head of the hospital," said the Chairman. The patient, thinking the man was clearly delusional asked, "Which ward do you come from?" The chairman's expression can only be described as very disconcerted...

taken from Desmond Rochford's pamphlet Tales from Tone Vale Hospital